Summary
This reprogramming is generally safe and beneficial when echo-guided. It corrects AV dyssynchrony, eliminates diastolic mitral regurgitation, restores proper filling, and usually improves symptoms like dizziness.
Potential Side Effects
- Too short AV delay: Truncation of atrial contraction (A-wave), reduced cardiac output, fatigue, or lower exercise tolerance. Proper echo guidance avoids this.
- Higher % ventricular pacing: Risk of pacing-induced cardiomyopathy (especially with right ventricular pacing in non-CRT devices).
- Minor battery consumption (usually negligible).
- Rare timing issues if other parameters are not adjusted.
Main Benefits
- Eliminates diastolic mitral regurgitation
- Improves left ventricular filling and stroke volume
- Relieves dizziness and AV dyssynchrony symptoms
- Non-invasive office procedure
Recommendation: Always perform under echocardiography guidance and follow up with your cardiologist.